This is a very simple tool to copy folders from one IMAP server to another server.
Example:
The example below copies all messages from the INBOX of your other server into the 'OTHER-SERVER/Inbox' folder of Gmail.
python imapcopy.py "imap.otherserver.com.au:993" "username:password" \ "imap.googlemail.com:993" "username@gmail.com:password" \ "INBOX" "OTHER-SERVER/Inbox" --verbose
Since Gmail terribly throttles uploading and downloading mails over IMAP, you may find the 'skip' and 'limit' options handy. If Gmail disconnected you after copying 123 emails out of your total 1000 emails in the example shown above, you may use the following command to resume copying skipping the first 123 messages.
python imapcopy.py "imap.otherserver.com.au:993" "username:password" \ "imap.googlemail.com:993" "username@gmail.com:password" \ "INBOX" "OTHER-SERVER/Inbox" --skip 123
Similarly the 'limit' option allows you to copy only the N number of messages excluding the skipped messages. For example, the following command will copy message no. 124 to 223 into Gmail.
python imapcopy.py "imap.otherserver.com.au:993" "username:password" \ "imap.googlemail.com:993" "username@gmail.com:password" \ "INBOX" "OTHER-SERVER/Inbox" --skip 123 --limit 100
There is also 'recurse' option that copies contents of folders with all of its subfolders. Also if you replace source mailbox with empty string, it will copy all contents of that mailbox:
python imapcopy.py "imap.otherserver.com.au:993" "username:password" \ "imap.googlemail.com:993" "username@gmail.com:password" \ "" "OTHER-SERVER" --recurse
Usage:
usage: imapcopy.py [-h] [-q] [-v]
source source-auth destination destination-auth mailboxes
[mailboxes ...]
positional arguments:
source Source host ex. imap.googlemail.com:993
source-auth Source host authentication ex. username@host.de:password
destination Destination host ex. imap.otherhoster.com:993
destination-auth Destination host authentication ex.
username@host.de:password
mailboxes List of mailboxes alternate between source mailbox and
destination mailbox.
optional arguments:
-h, --help show this help message and exit
-c, --create-mailboxes
Create the mailboxes on destination
-r, --recurse Recurse into submailboxes
-q, --quiet ppsssh... be quiet. (no output)
-v, --verbose more output please (debug level)
-s N, --skip N skip the first N message(s)
-l N, --limit N only copy N number of message(s)
Only tested on Python 2.7.